2.1..iphone hot and battery drained

You are correct - a hot phone indicates something is running continuously (the internal chips get hot from continuous processing) and draining the battery.

If you have rebooted the phone and it continues, it could be push. Try turning off push to see if it improves. Is your push using Exchange?

I'd be willing to bet that is it.

If it is the case, I would check and/or delete/reconfigure the Exchange account on the server side and on the phone. I suspect it is continuously communicating.

Me too. This is a major problem. Phone is getting hot enough to cook an egg and is draining VERY fast.

I'm having the same issue after updating to 2.1 I turned off push and its not hot anymore... Do I have to delete the accounts then re-add them?

Yes, give that a try.

Good luck.

Same problem.. terrible battery drain post 2.1 update... HAVE NOT PAID ATTENTION TO THE HEAT PROBLEM.

I think the 2.1 update is the cause since I haven't plugged my phone in since I ran the 2.1 update and when I did my phone got super hot using a wall charger. Now after several attempts to restore the phone my phone won't even power up.

My phone did sync/backup once when I let it cool down and plugged it into my mac but the battery had no life in it after sitting plugged in all night.

I was experiencing a very similar problem post 2.1 update. I did not have "push" on and did not use an Exchange server, so the suggestions above did not seem to be related to my situation.

It then dawned on me that I had never power cycled the iPhone since updating. So... I powered down the phone, waited a couple of minutes, then booted it back up. Now it works as good or better than it did before the 2.1 update. It does not get noticeably warm like it did before and the battery is back to normal. (don't have exact life-span numbers, but I notice the better battery life)

Don't know if that will work for everyone having this problem, but it worked for me.

I too expirienced a "hot Phone" after 2.1, however it did the same thing previously before and I had sent my iphone back in. yesterday I video taped my phone getting hot and draining the battery. The outside temp was 65 degrees (f) and while running an application I held a meat thermometer on the metal backing. The temp rose from room temp to 103.5 degrees! in very little time. Very odd but at least I documented it. I just recieved another iphone (non-3G) as a replacement and my problem now is that it is taking more than 2 hours to restore it on my PC. Guess I should invest in a mac.